【MEASURE YOUR WINDOWS TRACK】: The window lock is apply for sliding windows, sliding doors and vertical windows.please measure your window track size height must be greater than 0.55inch (1.4cm) and width must be less than 0.59inch (1.5cm) before ordering window locks. window locks is equipped with a vertical key, which can be applied to the middle track of the window.

【WIDE USAGE】: It ensures your family members safety,can control the window partially open or closed,effectively reduce the risk of children and pets falling from high windows,by locking your windows, it can also protect your property against damage during heavy rains and hurricanes.also, it prevent burglars and thieves.This sliding window lock for home,bedroom, kindergarten, office,etc.

【EASY TO INSTALL】: No additional installation tools or drilling required,3-step quick installation.step1,place the lock to a suitable position.Step2,Insert gasket protect window track from scratches.Step3,tighten the screws,done!you can easily fix the window lock at any part with the vertical key or hex keys,easy to reuse and re-install.

【PACKAGE INCLUDES】: 4 Sets of window locks for sliding windows,including 4 PCS sliding window locks,4 PCS hex keys,4 PCS gaskets,1 PCS vertical key.